利用fnd_flex_keyval包轻松获取关键性弹性域组合描述字段

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在Oracle Forms客户化开发中，如果遇到有在Form上提供关键性弹性域（以下简称“键弹性域”）功能支持的时候，我们可以利用FND_KEY_FLEX.DEFINE函数来轻松完成所有的初始化工作。其中也包括键弹性域的组合描述字段的显示的初始化：只要在FND_KEY_FLEX.DEFINE调用时指定了DESCRIPTION参数即可。然而有时我们仅是想要显示这个描述组合字段，仅此而已。并不需要提供完整的键弹性域功能。那么我们有什么快速而有效的方法来得到这个描述组合字段呢？试试下面的fnd_flex_keyval包里的方法吧~

实例：获取库存物料的物料类别集中的类别组合“描述”字段

需要用到的方法：

fnd_flex_keyval.validate_segs()
fnd_flex_keyval.concatenated_descriptions()

fnd_flex_keyval.validate_segs 的参数很多，对于获取物料类别组合字段我们仅需要其中的五个参数，如下：

fnd_flex_keyval.validate_segs(          operation        => <OPERATIONS>        , appl_short_name  => <Application Short Name>        , key_flex_code    => <Key Flex Code>        , structure_number => <ID_FLEX_NUM>        , concat_segments  => <CONCATENATED_SEGMENTS>);

参数说明：

- operation 可选值有:

FIND_COMBINATION - 所给定的组合字段必须在系统中已经被定义
CREATE_COMBINATION - 如果组合字段不存在，则在系统中创建该组合
CREATE_COMB_NO_AT - 功能和CREATE_COMBINATION相同，只是不像前者要使用相对独立的子事务autonomous transaction
CHECK_COMBINATION - 只是检查一下给定的组合字段是否合法，不管检查结果如何，都不创建新的组合
DEFAULT_COMBINATION - 返回默认的最小组合（这个参数值我也没太搞懂，呵呵）
CHECK_SEGMENTS - 分别验证字段（这个也很糊涂~）

- appl_short_name 应用程序简称，例如库存模块对应的应用简称为INV

- key_flex_code 键弹性域代码，可以在键弹性域定义界面找到，例如MCAT, GL#等等

- structure_number 指定键弹性域下的某个结构NUM，可以在键弹性域定义界面找到，对应字段为ID_FLEX_NUM

- concat_segments 要获取组合描述字段的对应的“值“组合字段，例如: A.000.MISC

一旦初始化验证字段成功，那么描述组合字段便可以通过调用fnd_flex_keyval.concatenated_descriptions()来得到了。

完整代码如下：

FUNCTION get_concat_descriptions(p_concat_segs IN VARCHAR2) RETURN VARCHAR2    IS    BEGIN      IF fnd_flex_keyval.validate_segs(          operation        => 'FIND_COMBINATION' -- 请根据情况自行修改        , appl_short_name  => 'INV' -- 请根据情况自行修改        , key_flex_code    => 'MCAT' -- 请根据情况自行修改        , structure_number => 101 -- 请根据情况自行修改        , concat_segments  => p_concat_segs) THEN                RETURN (fnd_flex_keyval.concatenated_descriptions());      ELSE        RETURN '';      END IF;    END;

获取货位的描述：

 --Get Stock Locators(MTLL) 库存货位的组合与描述  --SELECT cux_flex_pkg.get_mtll_flexfields(p_locator_id => 3950, p_organization_id => 7890, p_return => 'S') locator_name FROM dual;  FUNCTION get_mtll_flexfields(p_locator_id      NUMBER,                               p_organization_id NUMBER,                               p_return          VARCHAR2 DEFAULT 'S') RETURN VARCHAR2 IS    l_concatenated_descriptions VARCHAR2(2000);    l_success                   BOOLEAN;    l_concatenated_segments     VARCHAR2(2000);    c_structure_number          NUMBER;    c_key_flex_code             VARCHAR2(20);    c_appl_short_name           VARCHAR2(20);    l_application_id            NUMBER;    -- Keeps track of the current delimiter    l_delim         VARCHAR2(1) := '';    l_error_message VARCHAR2(1000);  BEGIN    --    --Bug: Value &VALUE for the flexfield segment Subinventory does not exist in the value set @VALUE_SET.    --如果在健弹性域定义的值集中使用了PROFILE，需要初始化赋值之后才行，否则会出现以上错误    --SELECT FND_PROFILE.VALUE_WNPS('MFG_ORGANIZATION_ID') FROM DUAL;    --fnd_global.apps_initialize(resp_appl_id => 401, resp_id => 65780, user_id => 1013436);    IF FND_PROFILE.VALUE_WNPS('MFG_ORGANIZATION_ID') IS NULL THEN      fnd_profile.put('MFG_ORGANIZATION_ID', p_organization_id);    END IF;    c_key_flex_code    := 'MTLL';    c_appl_short_name  := 'INV';    c_structure_number := 101;      SELECT application_id      INTO l_application_id      FROM fnd_application_vl a     WHERE a.application_short_name = c_appl_short_name;      -- Get the delimiter    l_delim := fnd_flex_apis.get_segment_delimiter(x_application_id => l_application_id, x_id_flex_code => c_key_flex_code, x_id_flex_num => c_structure_number);    --参数DATA_SET一定要设置，和物料的键弹性域定义的原理一样：因为INVENTORY_LOCATION_ID在数据库的基表中不是唯一的值    --SELECT set_defining_column_name,unique_id_column_name,application_table_name FROM fnd_id_flexs WHERE id_flex_code IN ('MTLL', 'MSTK');    l_success := fnd_flex_keyval.validate_ccid(appl_short_name  => c_appl_short_name,                                               key_flex_code    => c_key_flex_code,                                               structure_number => c_structure_number,                                               data_set         => to_char(p_organization_id), -- Requied                                               combination_id   => p_locator_id);    dbms_output.put_line('l_success = ' || to_char(sys.diutil.bool_to_int(l_success)));    l_error_message := fnd_flex_keyval.error_message;    IF l_success THEN      l_concatenated_descriptions := fnd_flex_keyval.concatenated_descriptions;      --dbms_output.put_line('Concatenated Descriptions : ' || l_concatenated_descriptions);          l_concatenated_segments := fnd_flex_keyval.concatenated_values;      --dbms_output.put_line('Concatenated Segments : ' || l_concatenated_segments);    ELSE      l_concatenated_segments     := NULL;      l_concatenated_descriptions := NULL;      fnd_message.set_name('FND', 'FLEX-SSV EXCEPTION');      fnd_message.set_token('MSG', l_error_message);      dbms_output.put_line(fnd_message.get);      RAISE app_exceptions.application_exception;    END IF;    IF p_return = 'S' THEN      RETURN(l_concatenated_segments);    ELSIF p_return = 'D' THEN      RETURN(l_concatenated_descriptions);    ELSE      RETURN(l_concatenated_segments);    END IF;    EXCEPTION    WHEN OTHERS THEN      RETURN NULL;      app_exception.raise_exception;  END get_mtll_flexfields;

库存物料的组合与描述库存物料的组合与描述：

  FUNCTION get_mstk_flexfields(p_item_id      NUMBER,                               p_organization_id NUMBER,                               p_return          VARCHAR2 DEFAULT 'S') RETURN VARCHAR2 IS    l_concatenated_descriptions VARCHAR2(2000);    l_success                   BOOLEAN;    l_concatenated_segments     VARCHAR2(2000);    c_structure_number          NUMBER;    c_key_flex_code             VARCHAR2(20);    c_appl_short_name           VARCHAR2(20);    l_application_id            NUMBER;    -- Keeps track of the current delimiter    l_delim         VARCHAR2(1) := '';    l_error_message VARCHAR2(1000);  BEGIN    --    --如果在健弹性域定义的值集中使用了PROFILE，需要初始化赋值之后才行，否则会出现以上错误    --SELECT FND_PROFILE.VALUE_WNPS('MFG_ORGANIZATION_ID') FROM DUAL;    --fnd_global.apps_initialize(resp_appl_id => 401, resp_id => 65780, user_id => 1013436);    IF FND_PROFILE.VALUE_WNPS('MFG_ORGANIZATION_ID') IS NULL THEN      fnd_profile.put('MFG_ORGANIZATION_ID', p_organization_id);    END IF;    c_key_flex_code    := 'MSTK';    c_appl_short_name  := 'INV';    c_structure_number := 101;      SELECT application_id      INTO l_application_id      FROM fnd_application_vl a     WHERE a.application_short_name = c_appl_short_name;      -- Get the delimiter    l_delim := fnd_flex_apis.get_segment_delimiter(x_application_id => l_application_id, x_id_flex_code => c_key_flex_code, x_id_flex_num => c_structure_number);    --参数DATA_SET一定要设置，和物料的键弹性域定义的原理一样：因为INVENTORY_LOCATION_ID在数据库的基表中不是唯一的值    --SELECT set_defining_column_name,unique_id_column_name,application_table_name FROM fnd_id_flexs WHERE id_flex_code IN ('MTLL', 'MSTK');    l_success := fnd_flex_keyval.validate_ccid(appl_short_name  => c_appl_short_name,                                               key_flex_code    => c_key_flex_code,                                               structure_number => c_structure_number,                                               data_set         => to_char(p_organization_id), -- Requied                                               combination_id   => p_item_id);    dbms_output.put_line('l_success = ' || to_char(sys.diutil.bool_to_int(l_success)));    l_error_message := fnd_flex_keyval.error_message;    IF l_success THEN      l_concatenated_descriptions := fnd_flex_keyval.concatenated_descriptions;      --dbms_output.put_line('Concatenated Descriptions : ' || l_concatenated_descriptions);          l_concatenated_segments := fnd_flex_keyval.concatenated_values;      --dbms_output.put_line('Concatenated Segments : ' || l_concatenated_segments);    ELSE      l_concatenated_segments     := NULL;      l_concatenated_descriptions := NULL;      fnd_message.set_name('FND', 'FLEX-SSV EXCEPTION');      fnd_message.set_token('MSG', l_error_message);      dbms_output.put_line(fnd_message.get);      RAISE app_exceptions.application_exception;    END IF;    IF p_return = 'S' THEN      RETURN(l_concatenated_segments);    ELSIF p_return = 'D' THEN      RETURN(l_concatenated_descriptions);    ELSE      RETURN(l_concatenated_segments);    END IF;    EXCEPTION    WHEN OTHERS THEN      RETURN NULL;      app_exception.raise_exception;  END get_mstk_flexfields;